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서강욱,황인택,문지연,김혜윤 대한수면연구학회 2022 Journal of sleep medicine Vol.19 No.3
Somnambulism or sleepwalking is a disorder classified as non-rapid eye movement sleep parasomnia and is common in adolescents. Sleep fragmentation occurs frequently in somnambulism, and waking up and wandering are the main symptoms of the disorder. Our patient was a 14-year-old male with a 3-year history of sleepwalking at night when he visited our sleep clinic. A polysomnography was performed for the evaluation of parasomnia. Our patient was diagnosed as having parasomnia overlap syndrome with moderate obstructive sleep apnea (OSA). Continuous positive airway pressure (CPAP) therapy was prescribed for the OSA. After 12 weeks of CPAP, not only did the patient’s OSA symptoms resolve but somnambulism disappeared. Previous reports of overlap syndrome with OSA and somnambulism also supported the use of CPAP treatment for patients with both OSA and somnambulism.
서강욱,김경수,김준희,김춘길 대한이비인후과학회 2004 대한이비인후과학회지 두경부외과학 Vol.47 No.2
Adenoid cystic carcinoma (ACC) is rare malignant tumor that affects major and minor salivary gland, ceruminous glands, and occasionaly excretory gland of the female genital tract. While ACC accand approximately 10% of all salivary neoplasm, this tumor is one of the most comon malignancies of the submandibular and minor salivary glands. AC is characterized by a slow rate of progression, a tendency for perineural invasion, and a high recur-rence rate after intensive surgery and adjuvant radiotherapy. AC is divided into 3 types acording to a distinctive histologic pattern. It is well known that the histologic pattern of ACC correlates well with the grade of tumors and prognosis. There are no mended. The most significant prognostic factors are clinical stage and distant metastasis. We present two cases of ACC arising from external auditory canal with a review of literature.
서강욱,김휘강 한국정보보호학회 2022 정보보호학회논문지 Vol.32 No.1
In this paper, we propose an anomaly detection system (ADS) to detect anomalies of the in-vehicle network for unmanned aerial vehicle (UAV). The proposed ADS detects the anomalies by measuring the similarity of status messages sequences periodically sent by the UAV to the ground control system. We defined three types of malicious message injection attacks that can be performed on the in-vehicle network of UAV and simulated those attack techniques in the Pixhawk4 quadcopter. The proposed ADS can detect abnormal sequences with accuracy of higher than 96%.
돌발성 난청 환자에서 Lasix, 비타민, Carbogen 흡입 병합 요법의 치료 효과와 치료 시기에 따른 예후 인자의 분석
서강욱,김훈,홍영호,양훈식,김경수,김희종 대한이비인후과학회 2005 대한이비인후과학회지 두경부외과학 Vol.48 No.2
Background and Objectives:Sudden sensorineural hearing loss generally refers to hearing losses of sensorineural origin, which have evolved over a period of a few hours to a few days. Therapy follows a polypragmatic approach based on the different theories of its origin. Therefore, drugs applied are mainly antiinflammatory, antiviral and vasoactive in nature. The likelihood of recovery is influenced by the shape of the audiogram, the age of the patients, and the presence or absence of vertigo. Very little information is available about the results of therapy for sudden sensorineural hearing loss with the delayed treatment. In this study, we evaluated the prognostic factors and therapeutic results of Lasix-Vitamin and carbogen inhalation therapy on sudden sensorineural hearing loss depending on the initiation time of treatment. Subjects and Method:We studied 167 cases of sudden sensorineural hearing loss, which were treated with Lasix-Vitamin and carbogen inhalation therapy at the Chung-Ang University Hospital from May 1990 to April 2004. In a retrospective chart review, we evaluated the prognostic factors and the results depending on different beginning time of treatment. Results:The therapeutic results showed that 90 cases (53.9%) gained hearing recovery. Patients who were treated within 7 days of onset showed recovery in 64 cases (76.2%), but 26 cases (31.3%) of the patients with who began treatment later than 8 days showed improvement of 15 dB or more in hearing threshold in pure tone audiometry. Among many prognostic factor, dizziness showed statistically significant correlation with the final result of hearing recovery in the delayed treatment group. Conclusion:The patients with sudden sensorineural hearing loss must be treated within 7 days, and dizziness is significant prognostic factor of patient with delayed treatment